U.S. patent number 10,029,754 [Application Number 15/010,329] was granted by the patent office on 2018-07-24 for bicycle electrical system.
This patent grant is currently assigned to Shimano Inc.. The grantee listed for this patent is Shimano Inc.. Invention is credited to Tadaharu Kurotobi, Takashi Toyoshima, Etsuyoshi Watarai.
United States Patent |
10,029,754 |
Watarai , et al. |
July 24, 2018 |
Bicycle electrical system
Abstract
A bicycle electrical system is provided with a first electric
component, a second electric component, a first wireless
communication unit, a first power source, and a second wireless
communication unit. The first wireless communication unit and the
first power source are electrically connected to at least the first
electric component. The second wireless communication unit is
electrically connected to at least the second electric component.
The first electric component can communicate with the first
wireless communication unit. The second electric component can
communicate with the second wireless communication unit. At least
the first wireless communication unit and the second wireless
communication unit are attached to the bicycle without interposing
the first electric component and the second electric component.
Inventors: |
Watarai; Etsuyoshi (Osaka,
JP), Toyoshima; Takashi (Osaka, JP),
Kurotobi; Tadaharu (Osaka, JP) |
Applicant: |
Name |
City |
State |
Country |
Type |
Shimano Inc. |
Sakai, Osaka |
N/A |
JP |
|
|
Assignee: |
Shimano Inc. (Osaka,
JP)
|
Family
ID: |
56739036 |
Appl.
No.: |
15/010,329 |
Filed: |
January 29, 2016 |
Prior Publication Data
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Document
Identifier |
Publication Date |
|
US 20160257269 A1 |
Sep 8, 2016 |
|
Foreign Application Priority Data
|
|
|
|
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Mar 6, 2015 [JP] |
|
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2015-044818 |
Sep 8, 2015 [JP] |
|
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2015-176946 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B62M
25/08 (20130101); B62J 99/00 (20130101); H02J
50/00 (20160201); B62J 45/00 (20200201) |
Current International
Class: |
B60L
1/00 (20060101); B62J 99/00 (20090101); B62M
25/08 (20060101); H02G 3/00 (20060101); B60L
3/00 (20060101); H02J 50/00 (20160101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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104276254 |
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Jan 2015 |
|
CN |
|
2015-27861 |
|
Feb 2015 |
|
JP |
|
Primary Examiner: Fureman; Jared
Assistant Examiner: Yeshaw; Esayas
Attorney, Agent or Firm: Global IP Counselors, LLP
Claims
What is claimed is:
1. A bicycle electrical system comprising: a first electric
component; a second electric component, the first and second
electric components each having a mounting part that is configured
to be mounted to a bicycle; a first wireless communication unit; a
first power source; and a second wireless communication unit; the
first wireless communication unit and the first power source being
electrically connected to at least the first electric component,
the second wireless communication unit being electrically connected
to at least the second electric component, the first electric
component configured to communicate with the first wireless
communication unit, the second electric component configured to
communicate with the second wireless communication unit, and at
least the first wireless communication unit and the second wireless
communication unit having another mounting part that is configured
to be attached to the bicycle.
2. The bicycle electrical system as recited in claim 1, wherein the
first wireless communication unit is electrically connected to the
first electric component via a first signal line, and the second
wireless communication unit is electrically connected to the second
electric component via a second signal line.
3. The bicycle electrical system as recited in claim 1, wherein the
first power source is configured to be attached to the bicycle
without interposing the first electric component and the second
electric component.
4. The bicycle electrical system as recited in claim 3, wherein the
first power source, the first wireless communication unit, and the
second wireless communication unit are configured to be attached to
different positions of the bicycle.
5. The bicycle electrical system as recited in the claim 3, wherein
the first power source as well as the first wireless communication
unit, and the second wireless communication unit are configured to
be attached to different positions of the bicycle.
6. The bicycle electrical system as recited in claim 1, wherein the
first power source is attached to the first electric component or
the second electric component.
7. The bicycle electrical system as recited in claim 6, wherein the
first power source is attached to the first electric component, and
the first power source is electrically connected to the second
electric component.
8. The bicycle electrical system as recited in claim 1, further
comprising a second power source that is electrically connected to
at least the second electric component.
9. The bicycle electrical system as recited in claim 8, wherein the
second power source is configured to be attached to the bicycle
without interposing the first electric component and the second
electric component.
10. The bicycle electrical system as recited in claim 9, wherein
the first power source, the second power source, the first wireless
communication unit, and the second wireless communication unit are
configured to be attached to different positions of the
bicycle.
11. The bicycle electrical system as recited in claim 9, wherein
the first power source as well as the first wireless communication
unit, and the second power source as well as the second wireless
communication unit are configured to be attached to different
positions of the bicycle.
12. The bicycle electrical system as recited in claim 8, wherein
the second power source is attached to the first electric component
or the second electric component.
13. The bicycle electrical system as recited in claim 5,
comprising: a first housing that houses at least a part of at least
the first wireless communication unit and at least a part of the
first power source; and a second housing that houses at least a
part of at least the second wireless communication unit; the first
housing and the second housing being configured to be attached to
the bicycle without interposing the first electric component and
the second electric component.
14. The bicycle electrical system as recited in claim 13, wherein
the first wireless communication unit comprises a first connecting
part and a first housing portion, the first power source comprises
a second connecting part and a second housing portion, and the
first connecting part and the second connecting part are joined to
supply power from the first power source to the first wireless
communication unit, and the first housing includes the first
housing portion and the second housing portion.
15. The bicycle electrical system as recited in claim 14, further
comprising a second power source electrically connected to at least
the second electric component, and the second housing houses at
least the second wireless communication unit and the second power
source.
16. The bicycle electrical system as recited in claim 15, wherein
the second wireless communication unit comprises a third connecting
part and a third housing portion, the second power source comprises
a fourth connecting part and a fourth housing portion, and the
third connecting part and the fourth connecting part are joined to
supply power from the second power source to the second wireless
communication unit, and the second housing includes the third
housing portion and the fourth housing portion.
17. The bicycle electrical system as recited in claim 13, wherein
the first housing and the second housing have substantially the
same shape.
18. The bicycle electrical system as recited in claim 13, wherein
at least one of the first housing and the second housing is
configured to be attached to a frame main body of the bicycle.
19. The bicycle electrical system as recited in claim 18, wherein
at least one of the first housing and the second housing is
configured to be attached to a chain stay of the bicycle.
20. The bicycle electrical system as recited in claim 18, wherein
at least one of the first housing and the second housing is
configured to be attached to a seat tube of the bicycle.
21. The bicycle electrical system as recited in claim 13, wherein
at least one of the first housing and the second housing is
configured to be attached to a seatpost of the bicycle.
22. The bicycle electrical system as recited in claim 13, wherein
at least one of the first housing and the second housing is
configured to be attached to a front fork of the bicycle.
23. The bicycle electrical system as recited in claim 13, wherein
at least one of the first housing and the second housing is
configured to be attached to a hub assembly of the bicycle.
24. The bicycle electrical system as recited in claim 13, wherein
at least one of the first housing and the second housing is
configured to be attached to a suspension device of the
bicycle.
25. The bicycle electrical system as recited in claim 13, wherein
the first housing and the second housing are configured to be
detachably attached to the bicycle.
26. The bicycle electrical system as recited in claim 13, wherein
the first housing and the second housing are configured to be
attached to the bicycle by an attaching member.
27. The bicycle electrical system as recited in claim 26, wherein
the attaching member comprises at least one of an adhesive, a
screw, a cable tie, or a double-sided tape.
28. A bicycle electrical system comprising: a first electric
component; and a first wireless communication unit, the first
wireless communication unit being electrically connected to the
first electric component, the first electric component being
communicable with the first wireless communication unit, and the
first wireless communication unit being configured to be detachably
attached to the first electric component.
29. The bicycle electrical system as recited in claim 28, wherein
the first electric component comprises a first base member that is
configured to be attached to the bicycle, and the first wireless
communication unit is configured to be detachably attached to the
first base member.
30. The bicycle electrical system as recited in claim 28, further
comprising a first power source attached to the first electric
component.
31. The bicycle electrical system as recited in claim 30, wherein
the first electric component comprises a first base member that is
configured to be attached to the bicycle, and the first power
source is configured to be detachably attached to the first base
member.
32. The bicycle electrical system as recited in claim 28, wherein
the first wireless communication unit is electrically connected to
the first electric component via a first signal line.
33. The bicycle electrical system as recited in claim 28, further
comprising a second electric component; and a second wireless
communication unit that is electrically connected to the second
electric component, the second electric component being configured
to communicate with the second wireless communication unit, and the
second wireless communication unit being configured to be
detachably attached to the second electric component.
34. The bicycle electrical system as recited in claim 33, wherein
the second electric component comprises a second base member that
is configured to be attached to the bicycle, and the second
wireless communication unit is configured to be detachably attached
to the second base member.
35. The bicycle electrical system as recited in claim 33,
comprising a second power source that is attached to the second
electric component.
36. The bicycle electrical system as recited in claim 35, wherein
the second electric component comprises a second base member that
can be attached to the bicycle, and the second power source is
detachably attached to the second base member.
37. The bicycle electrical system as recited in claim 33, wherein
the second wireless communication unit is electrically connected to
the second electric component via a second signal line.
38. A bicycle electrical system comprising: a first electric
component; a second electric component, the first and second
electric components each having a mounting part that is configured
to be mounted to a bicycle; a first wireless communication unit; a
first power source; and a second wireless communication unit; the
first wireless communication unit and the first power source being
electrically connected to at least the first electric component,
the second wireless communication unit being electrically connected
to at least the second electric component, the first electric
component being configured to communicate with the first wireless
communication unit, the second electric component configured to
communicate with the second wireless communication unit, the first
wireless communication unit and the first power source are attached
to the first electric component, and the second wireless
communication unit having another mounting part that is configured
to be directly attached to the bicycle.
39. The bicycle electrical system as recited in claim 38, further
comprising: an operating unit, and a third wireless communication
unit which transmits a gear changing signal wirelessly to at least
one of the first wireless communication unit and the second
wireless communication unit, the third wireless communication unit
being configured to be attached to the bicycle without interposing
the first electric component and the second electric component.
40. The bicycle electrical system as recited in claim 39,
comprising a third power source that is electrically connected to
at least the operating unit.
41. The bicycle electrical system as recited in claim 40, further
comprising a third housing that houses at least a part of the third
wireless communication unit and at least a part of the third power
source, and the third housing being configured to be attached to
the bicycle without interposing the first electric component and
the second electric component.
42. The bicycle electrical system as recited in claim 41, wherein
the first housing, the second housing, and the third housing are
substantially the same shape.
43. The bicycle electrical system as recited in claim 1, wherein
the second electric component comprises a second actuator that is
operated based on a signal from the second wireless communication
unit.
44. The bicycle electrical system as recited in claims 1, wherein
the first electric component comprises a first actuator that is
operated based on a signal from the first wireless communication
unit.
45. The bicycle electrical system as recited in claim 1, wherein
the second electric component comprises a second storage unit, and
information stored in the second storage unit is updated based on a
communication with the second wireless communication unit.
46. The bicycle electrical system as recited in claim 1, wherein
the first electric component comprises a first storage unit, and
information stored in the first storage unit is updated based on a
communication with the first wireless communication unit.
47. The bicycle electrical system as recited in of claim 1, wherein
at least one of the first and the second electric components is an
electric transmission.
48. The bicycle electrical system as recited in claim 47, wherein
one of the first and the second electric component is an electric
front derailleur, and the other of the first and the second
electric components is an electric rear derailleur.
49. The bicycle electrical system as recited in claim 1, wherein at
least one of the first and the second electric components is an
electric seatpost.
50. The bicycle electrical system as recited in claim 1, wherein at
least one of the first and the second electric components is an
electric suspension.
51. The bicycle electrical system as recited in claim 1, wherein at
least one of the first and the second electric components is a
drive unit comprising a motor for assisting a human power drive
force which is inputted to a crank.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims priority to Japanese Patent Application No.
2015-044818, filed on Mar. 6, 2015 and Japanese Patent Application
No. 2015-176946, filed on Sep. 8, 2015. The entire disclosures of
Japanese Patent Application No. 2015-044818 and Japanese Patent
Application No. 2015-176946 are hereby incorporated herein by
reference.
BACKGROUND
Field of the Invention
The present invention relates to a bicycle electrical system.
For example, Japanese Patent No. 5,211,102 is known as a bicycle
electrical system. This electrical system connects all the
operating devices, the control devices, the electric components,
and the power source via the wires.
SUMMARY
There is a demand for a bicycle electrical system having greater
convenience regarding the connections between the operating
devices, the control devices, the electric components, and the
power source, as well as attachment to a bicycle.
One object of the present invention is to provide a bicycle
electrical system which can contribute to an improvement of
convenience.
In accordance with a first aspect of the present invention, the
bicycle electrical system according to the present invention is a
bicycle electrical system comprising a first electric component, a
second electric component, a first wireless communication unit, a
first power source, and a second wireless communication unit. The
first wireless communication unit and the first power source are
electrically connected to at least the first electric component.
The second wireless communication unit is electrically connected to
at least the second electric component. The first electric
component can communicate with the first wireless communication
unit. The second electric component can communicate with the second
wireless communication unit. At least the first wireless
communication unit and the second wireless communication unit are
configured to be attached to a bicycle without interposing the
first electric component and the second electric component.
In accordance with a second aspect of the present invention, the
bicycle electrical system is configured so that the first wireless
communication unit is electrically connected to the first electric
component via a first signal line, and the second wireless
communication unit is electrically connected to the second electric
component via a second signal line.
In accordance with a third aspect of the present invention, the
bicycle electrical system is configured so that the first power
source is configured to be attached to the bicycle without
interposing the first electric component and the second electric
component.
In accordance with a fourth aspect of the present invention, the
bicycle electrical system is configured so that the first power
source, the first wireless communication unit and the second
wireless communication unit are configured to be attached to the
different positions of the bicycle.
In accordance with a fifth aspect of the present invention, the
bicycle electrical system is configured so that the first power
source and the first wireless communication unit, and the second
wireless communication unit are configured to be attached to the
different positions of the bicycle.
In accordance with a sixth aspect of the present invention, the
bicycle electrical system is configured so that the first power
source is attached to the first electric component or the second
electric component.
In accordance with a seventh aspect of the present invention, the
bicycle electrical system is configured so that the first power
source is attached to the first electric component, and the first
power source is electrically connected to the second electric
component.
In accordance with an eighth aspect of the present invention, the
bicycle electrical system further comprises a second power source,
wherein the second power source is electrically connected to at
least the second electric component.
In accordance with a ninth aspect of the present invention, the
bicycle electrical system is configured so that the second power
source is configured to be attached to the bicycle without
interposing the first electric component and the second electric
component.
In accordance with a tenth aspect of the present invention, the
bicycle electrical system is configured so that the first power
source, the second power source, the first wireless communication
unit, and the second wireless communication unit are configured to
be attached to the different positions of the bicycle.
In accordance with an eleventh aspect of the present invention, the
bicycle electrical system is configured so that the first power
source and the first wireless communication unit, and the second
power source, and the second wireless communication unit are
configured to be attached to the different positions of the
bicycle.
In accordance with a twelfth aspect of the present invention, the
bicycle electrical system is configured so that the second power
source is attached to the first electric component or the second
electric component.
In accordance with a thirteenth aspect of the present invention,
the bicycle electrical system further comprises a first housing for
housing at least a part of at least the first wireless
communication unit and at least a part of the first power source,
and a second housing for housing at least a part of at least the
second wireless communication unit. The first housing and the
second housing are configured to be attached to the bicycle without
interposing the first electric component and the second electric
component.
In accordance with a fourteenth aspect of the present invention,
the bicycle electrical system is configured so that the first
wireless communication unit comprises a first connecting part and a
first housing portion. The first power source comprises a second
connecting part and a second housing portion. The first connecting
part and the second connecting part are joined to supply power from
the first power source to the first wireless communication unit.
The first housing includes the first housing portion and the second
housing portion.
In accordance with a fifteenth aspect of the present invention, the
bicycle electrical system further comprises a second power source.
The second power source is electrically connected to at least the
second electric component. The second housing houses at least the
second wireless communication unit and the second power source.
In accordance with a sixteenth aspect of the present invention, the
bicycle electrical system is configured so that the second wireless
communication unit comprises a third connecting part and a third
housing portion. The second power source comprises a fourth
connecting part and a fourth housing portion. The third connecting
part and the fourth connecting part are joined to supply power from
the second power source to the second wireless communication unit.
The second housing includes the third housing portion and the
fourth housing portion.
In accordance with a seventeenth aspect of the present invention,
the bicycle electrical system is configured so that the first
housing and the second housing are substantially the same
shape.
In accordance with an eighteenth aspect of the present invention,
the bicycle electrical system is configured so that at least one of
the first housing and the second housing is configured to be
attached to a frame main body of the bicycle.
In accordance with a nineteenth aspect of the present invention,
the bicycle electrical system is configured so that at least one of
the first housing and the second housing is configured to be
attached to a chain stay of the bicycle.
In accordance with a twentieth aspect of the present invention, the
bicycle electrical system is configured so that at least one of the
first housing and the second housing is configured to be attached
to a seat tube of the bicycle.
In accordance with a twenty-first aspect of the present invention,
the bicycle electrical system is configured so that at least one of
the first housing and the second housing is configured to be
attached to a seatpost of the bicycle.
In accordance with a twenty-second aspect of the present invention,
the bicycle electrical system is configured so that at least one of
the first housing and the second housing is configured to be
attached to a front fork of the bicycle.
In accordance with a twenty-third aspect of the present invention,
the bicycle electrical system is configured so that at least one of
the first housing and the second housing is configured to be
attached to a hub assembly of the bicycle.
In accordance with a twenty-fourth aspect of the present invention,
the bicycle electrical system is configured so that at least one of
the first housing and the second housing is configured to be
attached to a suspension device of the bicycle.
In accordance with a twenty-fifth aspect of the present invention,
the bicycle electrical system is configured so that the first
housing and the second housing are configured to be detachably
attached to the bicycle.
In accordance with a twenty-sixth aspect of the present invention,
the bicycle electrical system is configured so that the first
housing and the second housing are configured to be attached to the
bicycle by an attaching member.
In accordance with a twenty-seventh aspect of the present
invention, the bicycle electrical system is configured so that the
attaching member comprises at least one of an adhesive, a screw, a
cable tie, or a double-sided tape.
In accordance with a twenty-eighth aspect of the present invention,
a bicycle electrical system is provided that comprises a first
electric component and a first wireless communication unit. The
first wireless communication unit is electrically connected to the
first electric component. The first electric component can
communicate with the first wireless communication unit. The first
wireless communication unit is configured to be detachably attached
to the first electric component.
In accordance with a twenty-ninth aspect of the present invention,
the bicycle electrical system, the first electric component
comprises a first base member that can be attached to the bicycle.
The first wireless communication unit is configured to be
detachably attached to the first base member.
In accordance with a thirtieth aspect of the present invention, the
bicycle electrical system further comprises a first power source
attached to the first electric component.
In accordance with a thirty-first aspect of the present invention,
the bicycle electrical system is configured so that the first
electric component comprises a first base member that can be
attached to the bicycle. The first power source is configured to be
detachably attached to the first base member.
In accordance with a thirty-second aspect of the present invention,
the bicycle electrical system is configured so that the first
wireless communication unit is electrically connected to the first
electric component via a first signal line.
In accordance with a thirty-third aspect of the present invention,
the bicycle electrical system further comprises a second electric
component and a second wireless communication unit. The second
wireless communication unit is electrically connected to the second
electric component. The second electric component is configured to
communicate with the second wireless communication unit. The second
wireless communication unit is configured to be detachably attached
to the second electric component.
In accordance with a thirty-fourth aspect of the present invention,
the bicycle electrical system is configured so that the second
electric component comprises a second base member that is
configured to be attached to the bicycle. The second wireless
communication unit is configured to be detachably attached to the
second base member.
In accordance with a thirty-fifth aspect of the present invention,
the bicycle electrical system further comprises a second power
source that is attached to the second electric component.
In accordance with a thirty-sixth aspect of the present invention,
the bicycle electrical system, the second electric component
comprises a second base member that can be attached to the bicycle.
The second power source is detachably attached to the second base
member.
In accordance with a thirty-seventh aspect of the present
invention, the bicycle electrical system is configured so that the
second wireless communication unit is electrically connected to the
second electric component via a second signal line.
In accordance with a thirty-eighth aspect of the present invention,
the bicycle electrical system according to the present invention is
a bicycle electrical system comprising a first electric component,
a second electric component, a first wireless communication unit, a
first power source, and a second wireless communication unit. The
first wireless communication unit and the first power source are
electrically connected to at least the first electric component.
The second wireless communication unit is electrically connected to
at least the second electric component. The first electric
component can communicate with the first wireless communication
unit. The second electric component can communicate with the second
wireless communication unit. The first wireless communication unit
and the first power source are attached to the first electric
component. The second wireless communication unit is configured to
be attached to the bicycle without interposing the first electric
component and the second electric component.
In accordance with a thirty-ninth aspect of the present invention,
the bicycle electrical system comprises an operating unit and a
third wireless communication unit which transmits a gear changing
signal wirelessly to at least one of the first wireless
communication unit and the second wireless communication unit. The
third wireless communication unit is configured to be attached to
the bicycle without interposing the first electric component and
the second electric component.
In accordance with a fortieth aspect of the present invention, the
bicycle electrical system further comprises a third power source
that is electrically connected to at least the operating unit.
In accordance with a forty-first aspect of the present invention,
the bicycle electrical system comprises a third housing that houses
at least a part of the third wireless communication unit and at
least a part of the third power source. The third housing is
attached to the bicycle without interposing the first electric
component and the second electric component.
In accordance with a forty-second aspect of the present invention,
the bicycle electrical system is configured so that the first
housing, the second housing, and the third housing are
substantially the same shape.
In accordance with a forty-third aspect of the present invention,
the bicycle electrical system is configured so that the second
electric component comprises a second actuator that is operated
based on a signal from the second wireless communication unit.
In accordance with a forty-fourth aspect of the present invention,
the bicycle electrical system is configured so that the first
electric component comprises a first actuator that is operated
based on a signal from the first wireless communication unit.
In accordance with a forty-fifth aspect of the present invention,
the bicycle electrical system is configured so that the second
electric component comprises a second storage unit, and information
stored in the second storage unit is updated based on a
communication with the second wireless communication unit.
In accordance with a forty-sixth aspect of the present invention,
the bicycle electrical system is configured so that the first
electric component comprises a first storage unit, and information
stored in the first storage unit is updated based on a
communication with the first wireless communication unit.
In accordance with a forty-seventh aspect of the present invention,
the bicycle electrical system is configured so that at least one of
the first and the second electric component is an electric
transmitter.
In accordance with a forty-eighth aspect of the present invention,
the bicycle electrical system is configured so that one of the
first and the second electric component is an electric front
derailleur, and the other of the first and the second electric
component is an electric rear derailleur.
In accordance with a forty-ninth aspect of the present invention,
the bicycle electrical system is configured so that at least one of
the first and the second electric component is an electric
seatpost.
In accordance with a fiftieth aspect of the present invention, the
bicycle electrical system is configured so that at least one of the
first and the second electric component is an electric
suspension.
In accordance with a fifty-first aspect of the present invention,
the bicycle electrical system is configured so that at least one of
the first and the second electric component is a drive unit
comprising a motor for assisting a human power drive force which is
inputted to a crank.
The above-described bicycle electrical system can contribute to the
improvement of convenience.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevational view of a bicycle equipped with an
electrical system of a first embodiment.
FIG. 2 is a schematic view of the electrical system of the front
derailleur illustrated in FIG. 1.
FIG. 3 is a schematic view of the electrical system rear derailleur
illustrated in FIG. 1.
FIG. 4 is a schematic view of the first housing illustrated in FIG.
1.
FIG. 5 is a block diagram of the electrical system illustrated in
FIG. 1.
FIG. 6 is a block diagram of the electrical system according to a
second embodiment.
FIG. 7 is a block diagram of the electrical system according to a
third embodiment.
FIG. 8 is a block diagram of the electrical system according to a
fourth embodiment.
FIG. 9 is a schematic view of the front derailleur according to a
fifth embodiment.
FIG. 10 is a schematic view of the rear derailleur according to the
fifth embodiment.
FIG. 11 is a block diagram of the electrical system according to a
sixth embodiment.
FIG. 12 is a schematic view of the electrical system front
derailleur according to the seventh embodiment.
FIG. 13 is a schematic view of the electrical system rear
derailleur according to a seventh embodiment.
FIG. 14 is a sequence diagram of the update step which is executed
by the electrical system according to the seventh embodiment.
FIG. 15 is a side elevational view of a bicycle equipped with the
electrical system of an eighth embodiment.
FIG. 16 is a schematic view of the electric seatpost according to
the eighth embodiment.
FIG. 17 is a schematic view of the front suspension according to
the ninth embodiment.
FIG. 18 is a block diagram of the electrical system according to a
modified example of the second embodiment.
FIG. 19 is a block diagram of the electrical system according to a
modified example of the third embodiment.
FIG. 20 is a block diagram of the electrical system according to a
modified example of the third embodiment.
FIG. 21 is a block diagram of the electrical system according to a
modified example of the first embodiment.
FIG. 22 is a side elevational view of a bicycle equipped with the
electrical system of a modified example of the first
embodiment.
DETAILED DESCRIPTION OF EMBODIMENTS
Selected embodiments will now be explained with reference to the
drawings. It will be apparent to those skilled in the bicycle field
from this disclosure that the following descriptions of the
embodiments are provided for illustration only and not for the
purpose of limiting the invention as defined by the appended claims
and their equivalents.
First Embodiment
Referring initially to FIGS. 1 to 5, a bicycle 10 is illustrated
that comprises a vehicle body 12, a frame main body 14, a handlebar
16, a seatpost 18, a front fork 20 and a hub assembly 22. The
vehicle body 12 of the bicycle 10 is equipped with a bicycle
electrical system 30 in accordance with a first embodiment. The
handlebar 16 is connected to the frame main body 14. The seatpost
18 is connected to the frame main body 14. The front fork 20 is
connected to the frame main body 14. The hub assembly 22 is
attached around the axle of a rear wheel WR.
The frame main body 14 comprises a support portion 14A, a down tube
14B, a chain stay 14C, a seat tube 14D and a head tube 14E. The
down tube 14B extends forward from the support portion 14A which
supports a crankshaft C. The chain stay 14C extends rearward from
the support portion 14A. The seat tube 14D extends upward from the
support portion 14A. The head tube 14E extends upward from the end
on the opposite side of the support portion 14A of the down tube
14B.
The handlebar 16 is detachably attached to the head tube 14E. The
seatpost 18 is detachably attached to the seat tube 14D. The front
fork 20 is supported to the head tube 14E and connects the
handlebar 16 and the axle of a front wheel WF. The hub assembly 22
is attached around the axle of the rear wheel WR.
The electrical system 30 comprises an electric front derailleur 32
(hereinafter referred to as "front derailleur 32"), an electric
rear derailleur 34 (hereinafter referred to as "rear derailleur
34"), a first wireless communication unit 36, a first power source
38, a second wireless communication unit 40, a second power source
42, an operating unit 44, a third wireless communication unit 46,
and a third power source 48. The front derailleur 32 is a first
electric component. The front derailleur 32 is an electric
transmitter. The rear derailleur 34 is a second electric component.
The rear derailleur 34 is an electric transmitter. Each of the
electric components includes an actuator and the mechanical
elements which are operated by the driving of the actuator.
The front derailleur 32 is attached to the frame main body 14 in
the vicinity of the crankshaft C, preferably to the seat tube 14D.
As shown in FIG. 2, the front derailleur 32 comprises a first base
member 50, a link member 52, a first movable member 54, a
controller 56, and a first actuator 58.
The first base member 50 is configured to be attached to the frame
main body 14 via a bolt or the like. The link member 52 connects
the first base member 50 and the first movable member 54 so that
the first movable member 54 is movable relative to the first base
member 50. The first movable member 54 supports a chain K (refer to
the FIG. 1). The controller 56 has a processor for executing
various programs to drive the first actuator 58. The controller 56
moves the link member 52 and the first movable member 54 with
respect to the first base member 50 by driving the first actuator
58 which is connected to the link member 52. The front derailleur
32 switches the chain K (refer to the FIG. 1) between a plurality
of the front sprockets SF (refer to FIG. 1) and changes the gear
ratio of the bicycle 10, by driving the first actuator 58.
As shown in FIG. 1, the rear derailleur 34 is attached to the frame
main body 14 in the vicinity of the hub assembly 22, preferably, to
a derailleur hanger 14F which is provided to the rear end of the
frame main body 14. As shown in FIG. 3, the rear derailleur 34
comprises a second base member 60, a link member 62, a second
movable member 64, a controller 66, and a second actuator 68.
The second base member 60 is configured to be attached to the frame
main body 14 via a bolt or the like. The link member 62 connects
the second base member 60 and the second movable member 64 so that
the second movable member 64 is movable relative to the second base
member 60. The second movable member 64 supports the chain K (refer
to FIG. 1). The controller 66 has a processor for executing various
programs to drive the second actuator 68. The controller 66 moves
the link member 62 and the second movable member 64 with respect to
the second base member 60 by driving the second actuator 68 which
is connected to the link member 62. The rear derailleur 34 switches
the chain K (refer to FIG. 1) between a plurality of the rear
sprockets SR (refer to FIG. 1) and changes the gear ratio of the
bicycle 10, by driving the second actuator 68.
As shown in FIG. 4, the first wireless communication unit 36
comprises a controller 70 that has a processor for performing
various calculations, a first connecting part 72, and a first
housing portion 74 for housing the controller 70. At least a part
of the first connecting part 72 is exposed from the first housing
portion 74.
The first power source 38 comprises a battery 76, a second
connecting part 78, and a second housing portion 80 which houses
the battery 76. The battery 76 can be a rechargeable battery or a
dry battery. The battery 76 is, for example, a lithium ion battery.
At least a part of the second connecting part 78 is exposed from
the second housing portion 80. The second connecting part 78 has a
shape that is complementary to the first connecting part 72, and is
configured to be connectable to the first connecting part 72.
Power from the first power source 38 is supplied to the first
wireless communication unit 36, with the first connecting part 72
and the second connecting part 78 being joined. The first housing
portion 74 and the second housing portion 80 define the first
housing 82, while the first connecting part 72 and the second
connecting part 78 are joined together. The first housing 82 houses
the controller 70, which is at least a part of the first wireless
communication unit 36, and the battery 76 which is at least a part
of the first power source 38.
As shown in FIG. 1, the first housing 82 is attached to the frame
main body 14 in the vicinity of the front derailleur 32, preferably
to the seat tube 14D. The first housing 82 has a shape which
corresponds to the shape of the portion of the frame main body 14
to which is attached the first housing 82. The first housing 82 is
detachably attached to the bicycle 10 by an attaching member AT
shown in FIG. 5. The attaching member AT comprises at least one of
an adhesive, a screw, a cable tie, or a double-sided tape.
As shown in FIG. 1, the first housing 82 is attached to the bicycle
10 without interposing the front derailleur 32 and the rear
derailleur 34. Accordingly, the first wireless communication unit
36 and the first power source 38 are attached to the bicycle 10
without interposing the front derailleur 32 and the rear derailleur
34.
As shown in FIG. 5, the second wireless communication unit 40
comprises a controller 84 that has a processor for performing
various calculations, a third connecting part 86, and a third
housing portion 88 for housing the controller 84. At least a part
of the third connecting part 86 is exposed from the third housing
portion 88.
The second power source 42 comprises a battery 90, a fourth
connecting part 92, and a fourth housing portion 94 which houses
the battery 90. The battery 90 can be a rechargeable battery or a
dry battery. The battery 90 is, for example, a lithium ion battery.
At least a part of the fourth connecting part 92 is exposed from
the fourth housing portion 94. The fourth connecting part 92 has a
shape that is complementary to the third connecting part 86, and is
configured to be connectable to the third connecting part 86.
Power from the second power source 42 is supplied to the second
wireless communication unit 40, with the third connecting part 86
and the fourth connecting part 92 being joined. The third housing
portion 88 and the fourth housing portion 94 define the second
housing 96, while the third connecting part 86 and the fourth
connecting part 92 are joined together. The second housing 96
houses the controller 84, which is at least a part of the second
wireless communication unit 40, and the battery 90 which is at
least a part of the second power source 42. The shape of the first
housing 82 is substantially the same as the shape of the second
housing 96.
As shown in FIG. 1, the second housing 96 is attached to the frame
main body 14 in the vicinity of the rear derailleur 34, preferably
to the chain stay 14C. The second housing 96 has a shape which
corresponds to the shape of the portion of the frame main body 14
to which is attached the second housing 96. The second housing 96
is detachably attached to the bicycle 10 by an attaching member AT
shown in FIG. 4.
As shown in FIG. 1, the second housing 96 is attached to the
bicycle 10 without interposing the front derailleur 32 and the rear
derailleur 34. Accordingly, the second wireless communication unit
40 and the second power source 42 are attached to the bicycle 10
without interposing the front derailleur 32 and the rear derailleur
34.
The first housing 82 and the second housings 96 are attached to
different positions of the bicycle 10. Accordingly, the first power
source 38 and the first wireless communication unit 36, and the
second power source 42 and the second wireless communication unit
40, are attached to the different positions of the bicycle 10.
As shown in FIG. 5, the operating unit 44 is attached to the
handlebar 16. The operating unit 44 comprises a controller 98, and
a plurality of switches 100 which are electrically connected to the
controller 98. The switches 100 are respectively associated with
the shifting operation of the front derailleur 32 and/or the rear
derailleur 34. The controller 98 has a processor for performing
various calculations.
The third wireless communication unit 46 comprises a controller 102
with a processor for performing various calculations, a fifth
connecting part 104, and a fifth housing portion 106 for housing
the controller 102. At least a part of the fifth connecting part
104 is exposed from the fifth housing portion 106.
The third power source 48 comprises a battery 108, a sixth
connecting part 110, and a sixth housing portion 112 which houses
the battery 108. The battery 108 can be a rechargeable battery or a
dry battery. The battery 108 is, for example, a lithium ion
battery. At least a part of the sixth connecting part 110 is
exposed from the sixth housing portion 112. The sixth connecting
part 110 has a shape that is complementary to the fifth connecting
part 104. The sixth connecting part 110 is configured to be
connectable to the fifth connecting part 104.
Power from the third power source 48 is supplied to the third
wireless communication unit 46, with the fifth connecting part 104
and the sixth connecting part 110 being joined. The fifth housing
portion 106 and the sixth housing portion 112 define the third
housing 114, while the fifth connecting part 104 and the sixth
connecting part 110 are joined together. The third housing 114
houses the controller 102, which is at least a part of the third
wireless communication unit 46, and the battery 108 which is at
least a part of the third power source 48. The shape of the third
housing 114 is substantially the same as the shape of the first
housing 82 and the shape of the second housing 96.
As shown in FIG. 1, the third housing 114 is attached to the
handlebar 16 or the frame main body 14 in the vicinity of the
handlebar 16. When attached to the frame main body 14, the third
wireless communication unit 46 is preferably attached to the head
tube 14E or the down tube 14B. The third housing 114 has a shape
which corresponds to the shape of the portion of the frame main
body 14 or the handlebar 16 to which is attached the third housing
114. The third housing 114 is detachably attached to the bicycle 10
by an attaching member AT shown in FIG. 5.
As shown in FIG. 1, the third housing 114 is attached to the
bicycle 10 without interposing the front derailleur 32 and the rear
derailleur 34. Accordingly, the third wireless communication unit
46 and the third power source 48 are attached to the bicycle 10
without interposing the front derailleur 32 and the rear derailleur
34.
The configuration of the electrical system 30 will be described
with reference to FIG. 5.
The front derailleur 32, the rear derailleur 34, the first wireless
communication unit 36, the first power source 38, the second
wireless communication unit 40, and the second power source 42 are
able to transmit the signals and the power by a power line
communication (the Power Line Communication; PLC). Therefore,
compared to when respectively transmitting the signals by a signal
line and the power by a power line, the wiring is simpler and the
convenience is improved.
The first wireless communication unit 36 is electrically connected
to the controller 56 of the front derailleur 32 via the first
signal line 116A. The first power source 38 is electrically
connected to the front derailleur 32 via the first wireless
communication unit 36. The first power source 38 supplies power to
the first wireless communication unit 36 and the front derailleur
32.
The second wireless communication unit 40 is electrically connected
to the controller 66 of the rear derailleur 34 via the second
signal line 116B. The second power source 42 is electrically
connected to the rear derailleur 34 via the second wireless
communication unit 40. The second power source 42 supplies power to
the second wireless communication unit 40 and the rear derailleur
34.
The third wireless communication unit 46 is electrically connected
to the controller 44 via the third signal line 116C. The third
power source 48 is electrically connected to the operating unit 44
via the third wireless communication unit 46. The third power
source 48 supplies power to the third wireless communication unit
46 and the operating unit 44.
The operation of the electrical system 30 will be described.
When a switch 100 is operated, the controller 98 of the operating
unit 44 outputs an operation signal corresponding to the third
wireless communication unit 46 via the third signal line 116C. The
controller 102 of the third wireless communication unit 46
wirelessly transmits a gear changing signal to at least one of the
first wireless communication unit 36 and the second wireless
communication unit 40 based on an operation signal which is
inputted from the operating unit 44.
When receiving a gear changing signal comprising a shifting
operation of the front derailleur 32 from the third wireless
communication unit 46, the controller 70 of the first wireless
communication unit 36 outputs a control signal to the front
derailleur 32. The controller 56 of the front derailleur 32
performs a shifting operation based on a control signal from the
first wireless communication unit 36. That is, the front derailleur
32 operates the first actuator 58 based on a signal from the first
wireless communication unit 36.
When receiving a gear changing signal comprising a shifting
operation of the rear derailleur 34 from the third wireless
communication unit 46, the controller 84 of the second wireless
communication unit 40 outputs a control signal to the rear
derailleur 34. The controller 66 of the rear derailleur 34 performs
a shifting operation based on a control signal from the second
wireless communication unit 40. That is, the rear derailleur 34
operates the second actuator 68 based on a signal from the second
wireless communication unit 40.
The electrical system 30 exerts the following effect.
(1) In the electrical system 30, the wireless communication units
36 and 40 are electrically connected to the front derailleur 32 and
the rear derailleur 34. Accordingly, the wiring between the front
derailleur 32 and the rear derailleur 34 and the operating unit 44
in the bicycle 10 can be omitted. Accordingly, the wiring is
simplified, and contributes to the improvement in the convenience
of the electrical system.
(2) The first wireless communication unit 36 and the second
wireless communication unit 40 are attached to the bicycle 10
without interposing the front derailleur 32 and the rear derailleur
34. Accordingly, the front derailleur 32 and the rear derailleur 34
do not need to be large.
(3) The first power source 38 and the second power source 42 are
attached to the bicycle 10 without interposing the front derailleur
32 and the rear derailleur 34. Accordingly, the front derailleur 32
and the rear derailleur 34 do not need to be large.
(4) The electrical system 30 comprises a second power source 42.
Accordingly, compared to a configuration in which the power is
shared from the first power source 38 to the rear derailleur 34 and
the second wireless communication unit 40, the wiring can be
simplified.
(5) The first wireless communication unit 36 and the first power
source 38 are attached in the vicinity of the front derailleur 32.
Accordingly, the first signal line 116A which connects the front
derailleur 32 with the first wireless communication unit 36 and the
first power source 38 can be shortened.
(6) The second wireless communication unit 40 and the second power
source 42 are attached in the vicinity of the rear derailleur 34.
Accordingly, the second signal line 116B which connects the rear
derailleur 34 with the second wireless communication unit 40 and
the second power source 42 can be shortened.
(7) The first wireless communication unit 36 and the first power
source 38 are housed in the first housing 82. Accordingly, since
the first wireless communication unit 36 and the first power source
38 can be attached to the bicycle 10 by attaching the first housing
82 to the bicycle 10 the convenience can be improved.
(8) The second wireless communication unit 40 and the second power
source 42 are housed in the second housing 96. Accordingly, since
the second wireless communication unit 40 and the second power
source 42 can be attached to the bicycle 10 by attaching the second
housing 96 to the bicycle 10, the convenience can be improved.
(9) The electrical system 30 comprises a third power source 48.
Accordingly, compared to a configuration in which the power is
shared from the first power source 38 or the second power source 42
to the operating unit 44 and the third wireless communication unit
46, the wiring can be simplified.
(10) The shape of the first housing 82, the shape of the second
housing 96, and the shape of the third housing 114 are
substantially the same. Accordingly, the first housing 82, the
second housing 96, and the third housing 114 can be attached to the
bicycle 10 by a similarly shaped attaching member AT.
Second Embodiment
The electrical system 30 of the second embodiment will be described
with reference to FIG. 6. The configurations that are common to the
first embodiment are given the same reference symbols as the first
embodiment, and the descriptions thereof will be omitted.
The first wireless communication unit 36 comprises the controller
70 that has a processor for performing various calculations, and a
fourth housing 118 for housing the controller 70. The controller 70
is connected to the controller 56 of the front derailleur 32 by a
fourth communication line 116D.
The fourth housing 118 is attached to the frame main body 14 in the
vicinity of the front derailleur 32, preferably to the seat tube
14D. The fourth housing 118 is attached to the bicycle 10 by the
attaching member AT. The fourth housing 118 is attached to the
bicycle 10 without interposing a front derailleur 32 and a rear
derailleur 34. Accordingly, the first wireless communication unit
36 is attached to the bicycle 10 without interposing the front
derailleur 32 and the rear derailleur 34.
The first power source 38 comprises the battery 76, and a fifth
housing 122 which houses the battery 76. The battery 76 is
connected to the controller 56 of the front derailleur 32 by a
first power line 120A. The first power source 38 supplies power to
the front derailleur 32 via the first power line 120A. The first
power source 38 supplies power to the first wireless communication
unit 36 via the front derailleur 32.
The fifth housing 122 is attached to the frame main body 14 in the
vicinity of the front derailleur 32, preferably to the seat tube
14D. The fifth housing 122 is attached to the bicycle 10 by the
attaching member AT. The fifth housing 122 is attached to the
bicycle 10 without interposing a front derailleur 32 and a rear
derailleur 34. Accordingly, the first power source 38 is attached
to the bicycle 10 without interposing the front derailleur 32 and
the rear derailleur 34.
The second wireless communication unit 40 comprises the controller
84 that has a processor for performing various calculations, and a
sixth housing 124 for housing the controller 84. The controller 84
is connected to the controller 66 of the rear derailleur 34 by a
fifth communication line 116E.
The sixth housing 124 is attached to the frame main body 14 in the
vicinity of the rear derailleur 34, preferably to the chain stay
14C. The sixth housing 124 is attached to the bicycle 10 by an
attaching member AT. The sixth housing 124 is attached to the
bicycle 10 without interposing the front derailleur 32 and the rear
derailleur 34. Accordingly, the second wireless communication unit
40 is attached to the bicycle 10 without interposing the front
derailleur 32 and the rear derailleur 34.
The second power source 42 comprises the battery 90, and a seventh
housing 126 which houses the battery 90. The battery 76 is
connected to the controller 66 of the rear derailleur 34 by a
second power line 120B. The second power source 42 supplies power
to the rear derailleur 34 via the second power line 120B. The
second power source 42 supplies power to the second wireless
communication unit 40 via the rear derailleur 34.
The seventh housing 126 is attached to the frame main body 14 in
the vicinity of the front derailleur 32, preferably to the seat
tube 14D. The seventh housing 126 is attached to the bicycle 10 by
the attaching member AT. The seventh housing 126 is attached to the
bicycle 10 without interposing the front derailleur 32 and the rear
derailleur 34. Accordingly, the second power source 42 is attached
to the bicycle 10 without interposing the front derailleur 32 and
the rear derailleur 34.
The fourth housing 118, the fifth housing 122, the sixth housing
124, and the seventh housing 126 are attached to different
positions of the bicycle 10. Accordingly, the first power source
38, the first wireless communication unit 36, the second power
source 42, and the second wireless communication unit 40, are
attached to different positions of the bicycle 10. According to the
electrical system 30 of the second embodiment, at least the effects
of (1) and (2) of the first embodiment can be achieved.
Third Embodiment
The electrical system 30 of the third embodiment will be described
with reference to FIG. 7. The configurations that are common to the
second embodiment are given the same reference symbols as the
second embodiment, and the descriptions thereof will be
omitted.
The electrical system 30 comprises the front derailleur 32, the
rear derailleur 34, the first wireless communication unit 36, the
first power source 38, the second wireless communication unit 40,
the operating unit 44, the third wireless communication unit 46,
and the third power source 48.
The first power source 38 comprises the battery 76, and the fifth
housing 122. The battery 76 is connected to the controller 56 of
the front derailleur 32 by the first power line 120A. The first
power source 38 is electrically connected to the front derailleur
32 via the first power line 120A, and supplies the power to the
front derailleur 32.
The battery 76 is connected to the controller 66 of the rear
derailleur 34 by a third power line 120C. The first power source 38
supplies power to the rear derailleur 34 via the third power line
120C. The first power source 38 is electrically connected to the
second wireless communication unit 40 via the rear derailleur 34,
and supplies power to the rear derailleur 34. According to the
electrical system 30 of the third embodiment, at least the effects
of (1) and (2) of the first embodiment can be achieved.
Fourth Embodiment
The electrical system 30 of the fourth embodiment will be described
with reference to FIG. 8. The configurations that are common to the
third embodiment are given the same reference symbols as the third
embodiment, and the descriptions thereof will be omitted.
The electrical system 30 comprises the front derailleur 32, the
rear derailleur 34, the first wireless communication unit 36, the
first power source 38, the second wireless communication unit 40,
the operating unit 44, the third wireless communication unit 46,
and the third power source 48.
The first power source 38 comprises the battery 76, and the fifth
housing 122. The battery 76 is connected to the controller 70 of
the first wireless communication unit 36 by a fourth power line
120D. The first power source 38 supplies power to the front
derailleur 32 via the first wireless communication unit 36.
The battery 76 is connected to the controller 84 of the second
wireless communication unit 40 by a fifth power line 120E. The
first power source 38 supplies power to the rear derailleur 34 via
the second wireless communication unit 40. According to the
electrical system 30 of the fourth embodiment, at least the effects
of (1) and (2) of the first embodiment can be achieved.
Fifth Embodiment
The electrical system 30 of the fifth embodiment will be described
with reference to FIGS. 9 and 10. The configurations that are
common to the first embodiment are given the same reference symbols
as the first embodiment, and the descriptions thereof will be
omitted.
As shown in FIG. 9, the first housing 82 is detachably attached to
the first base member 50 of the front derailleur 32. The first
housing 82 and the first base member 50 are attached, for example,
via a bolt or the like. Accordingly, the first wireless
communication unit 36 and the first power source 38 can be
detachably attached to the first base member 50.
As shown in FIG. 10, the second housing 96 is detachably attached
to the second base member 60 of the rear derailleur 34. The second
housing 96 and the second base member 60 are attached, for example,
via a bolt or the like. Accordingly, the second wireless
communication unit 40 and the second power source 42 can be
detachably attached to the second base member 60.
The electrical system 30 of the fifth embodiment can achieve the
following effects, in addition to the effect of (1) of the first
embodiment.
(11) The first wireless communication unit 36 and the first power
source 38 are attached to the front derailleur 32. Accordingly, the
surrounding of the front derailleur 32 of the frame main body 14
can be less complicated.
(12) The first wireless communication unit 36 and the first power
source 38 are detachably attached to the front derailleur 32.
Accordingly, it is possible to exchange only one of the front
derailleur 32, the first wireless communication unit 36, or the
first power source 38, mounted to the bicycle 10.
(13) The first wireless communication unit 36 and the first power
source 38 are attached to the first base member 50. Accordingly, a
more stable attachment is possible compared to the link member 52
and the first movable member 54.
(14) The second wireless communication unit 40 and the second power
source 42 are attached to the rear derailleur 34. Accordingly, the
surrounding of the rear derailleur 34 of the frame main body 14 can
be less complicated.
(15) The second wireless communication unit 40 and the second power
source 42 are detachably attached to the rear derailleur 34.
Accordingly, it is possible to exchange only one of the rear
derailleur 34, the second wireless communication unit 40, or the
second power source 42, mounted to the bicycle 10.
(16) The second wireless communication unit 40 and the second power
source 42 are attached to the second base member 60. Accordingly, a
more stable attachment is possible compared to the link member 62
and the second movable member 64.
Sixth Embodiment
The electrical system 30 of the sixth embodiment will be described
with reference to FIG. 11. The configurations that are common to
the first embodiment are given the same reference symbols as the
first embodiment, and the descriptions thereof will be omitted.
The electrical system 30 comprises the front derailleur 32, the
rear derailleur 34, the first wireless communication unit 36, the
first power source 38, the second wireless communication unit 40,
the operating unit 44, the third wireless communication unit 46,
and the third power source 48.
The first wireless communication unit 36 and the first power source
38 are attached to a first base member 50 of the front derailleur
32. The first wireless communication unit 36 and the first power
source 38 are built in to the first base member 50.
The first wireless communication unit 36 is electrically connected
to the controller 56 of the front derailleur 32. The first power
source 38 is electrically connected to the controller 70 of the
first wireless communication unit 36, the controller 56 of the
front derailleur 32, and the controller 66 of the rear derailleur
34. The first power source 38 supplies power to the controller 66
of the rear derailleur 34 via a power line 120F. According to the
electrical system 30 of the sixth embodiment, at least the effects
of (1) of the first embodiment and the effects of (11) and (13) of
the sixth embodiment can be achieved.
Seventh Embodiment
The electrical system 30 of the seventh embodiment will be
described with reference to FIG. 12-FIG. 14. The configurations
that are common to the first embodiment are given the same
reference symbols as the first embodiment, and the descriptions
thereof will be omitted.
As shown in FIG. 12, the front derailleur 32 comprises a first
storage unit 136. Information that is stored in the first storage
unit 136 includes identification information, as well as the
updatable individual information. The identification information
includes the model number and the like of the front derailleur 32.
The individual information includes the setting information as well
as the history information. The setting information is, for
example, the information regarding the adjustment setting of the
front derailleur 32. The information regarding the adjustment
setting of the front derailleur 32 includes, for example, the
location information of the first movable member 54. The location
information of the first movable member 54 is stored, for example,
as the operation amount of the first actuator 58. The history
information includes, for example, the information indicating
whether or not the shifting was appropriately carried out, and the
information indicating whether or not the communication with the
first wireless communication unit 36 has been appropriately carried
out. The controller 56 can update the history information each time
the shifting and the communication are executed, or, update only
when the communication is not appropriately executed.
As shown in FIG. 13, the rear derailleur 34 comprises a second
storage unit 138. The information that is stored in the second
storage unit 138 includes the identification information, as well
as the updatable individual information. The identification
information includes the model number and the like of the rear
derailleur 34. The individual information includes the setting
information as well as the history information. The setting
information is, for example, the information regarding the
adjustment setting of the rear derailleur 34. The information
regarding the adjustment setting of the rear derailleur 34
includes, for example, the location information of the first
movable member 54. The location information of the second movable
member 64 is stored, for example, as the operation amount of the
second actuator 68. The history information includes, for example,
the information indicating whether or not shifting was
appropriately carried out, and the information indicating whether
or not the communication with the second wireless communication
unit 40 has been appropriately carried out. The controller 66 can
update the history information each time the shifting and
communication are executed, or, update only when the communication
is not appropriately executed.
The update steps of the information which is stored in the first
storage unit 136 will be described with reference to FIG. 14.
In the update steps, an external device E and the first wireless
communication unit 36 are communicably connected. The external
device E and the first wireless communication unit 36 are
communicably connected by wireless communication. Wireless
standards such as Bluetooth (registered trademark), Wi-Fi
(registered trademark), ANT+ (registered trademark), and NFC (Near
Field Communication) can be employed for the wireless
communication. The external device E and the first wireless
communication unit 36 can also be communicably connected by a wired
communication. The external device E can also directly communicate
with the first wireless communication unit 36 or, the external
device E and the first wireless communication unit 36 can
communicate indirectly via another electric component. An external
device E includes various electronic devices, such as a desktop
computer, a laptop personal computer, and a smart phone. Examples
of other electric components include an operating unit 44, a cycle
computer, a battery unit, and other electric components. Examples
of the electric component include a drive unit comprising a motor
for assisting the human power drive force which is inputted to the
bicycle 10, an electric seatpost, and an electric suspension, and
the like.
When connected to the first wireless communication unit 36, the
external device E requests the identification information from the
first wireless communication unit 36, in Step S11. After receiving
a signal requesting the identification information (hereinafter
referred to as the "identification information request signal"),
the first wireless communication unit 36 requests the
identification information from the controller 56 in Step S12.
After receiving an identification information request signal, the
controller 56 reads the identification information stored in the
first storage unit 136 and transmits the same to the first wireless
communication unit 36, in Step S13. After receiving the
identification information, the first wireless communication unit
36 transmits the identification information to the external device
E in Step S14.
After receiving the identification information, the external device
displays the electric component which corresponds with the received
identification information, in a display unit (not shown), in Step
S15. Specifically, the model number of the front derailleur 32 is
displayed. At this time, when there are a plurality of electric
components which can communicate with the first wireless
communication unit 36, the external device E can also display a
list of electric components that can communicate with the first
wireless communication unit 36. Further, when the external device E
is also communicable with the second wireless communication unit
40, the external device E can also display a list including
electric components that can communicate with the second wireless
communication unit 40.
The user selects the front derailleur 32 using an operating unit
(not shown), following the contents of the display of the display
unit (not shown) of the external device E. The operating unit is,
for example, a touch panel or a keyboard provided to the display
unit.
When the user selects the front derailleur 32 via the operating
unit (not shown), the external device E requests the individual
information from the first wireless communication unit 36, in Step
S16. After receiving a signal requesting the individual information
(hereinafter referred to as the "individual information request
signal"), the first wireless communication unit 36 requests the
individual information from the controller 56 in Step S17. After
receiving an individual information request signal, the controller
56 reads the individual information from the first storage unit 136
and transmits the same to the first wireless communication unit 36,
in Step S18. After receiving the individual information, the first
wireless communication unit 36 transmits the individual information
to the external device E in Step S19.
After receiving the individual information, the external device E
displays the received individual information in a display unit (not
shown), in Step S20. The user selects the individual information
using an operating unit (not shown), following the contents of the
display of the display unit (not shown) of the external device E.
When the user performs an operation to change the individual
information, the external device E transmits a signal to request an
update of the individual information (hereinafter referred to as
the "individual information update request signal") to the first
wireless communication unit 36, in Step S21. The individual
information update request signal is, for example, a signal
including a request to the effect of changing the first movable
member 54 in a first direction or a second direction, in the
adjustment setting of the front derailleur 32.
After receiving individual information request signal, the first
wireless communication unit 36 transmits the individual information
request signal to the controller 56 in Step S22. After receiving
the individual information update request signal, the controller 56
updates the individual information that is stored in the first
storage unit 136, based on the individual information update
request signal, in Step S23. That is, the front derailleur 32
updates the information that is stored in the first storage unit
136 based on the communication with the first wireless
communication unit 36. That is, the controller 56 operates the
first actuator 58 based on the individual information update
request signal, in Step S23. When the individual information update
request signal is an adjustment setting of the front derailleur 32,
the controller 56 operates the first actuator 58 based on the
individual information update request signal. That is, the front
derailleur 32 operates the first actuator 58 based on a signal from
the first wireless communication unit 36.
After Step S23, the update step is ended, or, at least one step of
Steps S11-S23 is executed again, based on the operation of the
operating unit (not shown) of the external device E. For example,
when the user performs an operation to update another individual
information of the front derailleur 32, Step S16-Step S23 are
executed again. Further, when the user further updates the
individual information updated in Step S23, Step S21-Step S23 are
executed again.
The same step as the update step of the information which is stored
in the first storage unit 136 is performed regarding the update
step of the information stored in the second storage unit 138. For
example, when an individual information update request signal is
transmitted from the external device E to the second wireless
communication unit 40 in accordance with Step S21, the second
wireless communication unit 40 which has received the individual
information update request signal transmits the individual
information update request signal to the controller 66. After
receiving individual information update request signal, the
controller 66 updates the individual information that is stored in
the second storage unit 138, based on the individual information
update request signal. The rear derailleur 34 updates the
information that is stored in the second storage unit 138 based on
the communication with the second wireless communication unit
40.
Further, the controller 66 operates the second actuator 68 based on
the individual information update request signal. When the
individual information update request signal is an adjustment
setting of the rear derailleur 34, the controller 66 operates the
second actuator 68 based on the individual information update
request signal. That is, the rear derailleur 34 operates the second
actuator 68 based on a signal from the second wireless
communication unit 40. According to the electrical system 30 of the
seventh embodiment, at least effects in accordance with (1) and (2)
of the first embodiment can be achieved.
Eighth Embodiment
The electrical system 30 of the eighth embodiment will be described
with reference to FIGS. 15 and 16. The configurations that are
common to the first embodiment are given the same reference symbols
as the first embodiment, and the descriptions thereof will be
omitted. In the eighth embodiment, the electric seatpost 134 is an
electric component.
As shown in FIG. 15, the electrical system 30 is mounted on a
bicycle 10A equipped with a vehicle body 130. The vehicle body 130
comprises a frame main body 132, a handlebar 16, a front fork 20, a
hub assembly 22, and an electric seatpost 134. The frame main body
132 comprises a down tube 14B, a seat tube 14D, and a head tube
14E.
As shown in FIG. 16, the electric seatpost 134 comprises a first
movable member 140, a controller 142, a first storage unit 144, and
a first actuator 146. The first actuator 146 is, for example, an
electric motor. The first movable member 140 is, for example, a
pinion of a rack-and-pinion mechanism. The electric seatpost 134 is
a first electric component.
The controller 142 is electrically connected to the first wireless
communication unit 36. The controller 142 has a processor for
performing various calculations and executing various programs. The
controller 142 is communicable with the first wireless
communication unit 36. The first power source 38 can supply power
to the controller 142. At least one of the switches 100 of the
operating unit 44 shown in FIG. 5 preferably changes the seat
height of the electric seatpost 134. As shown in FIG. 16, the
controller 142 changes the seat height of the electric seatpost
134, by operating the first movable member 140. The electric
seatpost 134 operates the first actuator 146 based on a signal from
the first wireless communication unit 36. When the first actuator
146 is driven, the first movable member 140 is operated and the
seat height of the electric seatpost 134 is changed.
Information that is stored in the first storage unit 144 includes
the identification information, as well as the updatable individual
information. The identification information includes the model
number and the like of the electric seatpost 134. The individual
information includes the setting information as well as the history
information. The setting information is, for example, the seat
height of the electric seatpost 134. The history information
includes, for example, the information indicating whether or not
communication with the first wireless communication unit 36 has
been appropriately carried out.
The controller 142 operates the first actuator 146 based on a
signal from the first wireless communication unit 36. For example,
when an individual information update request signal for changing
the seat height is received from the operating unit 44 or an
external device E (refer to FIG. 15), the seat height is changed by
operating the first actuator 146 based on the received individual
information update request signal. According to the electrical
system 30 of the eighth embodiment, at least the effects in
accordance with (1) and (2) of the first embodiment can be
achieved.
Ninth Embodiment
The electrical system 30 of the ninth embodiment will be described
with reference to FIGS. 15 and 17. The configurations that are
common to the first embodiment are given the same reference symbols
as the first embodiment, and the descriptions thereof will be
omitted.
The vehicle body 130 further comprises a front suspension device
148 and a rear suspension device 150. The front suspension device
148 is a first electric component.
As shown in the FIG. 17, the front suspension device 148 comprises
a first movable member 152, a controller 154, a first storage unit
156, and a first actuator 158. The front suspension device 148 is,
for example, a hydraulic device, and the first movable member 152
is, for example, a solenoid valve.
The controller 154 has a processor for performing various
calculations and executing various programs. The controller 154 is
electrically connected to the first wireless communication unit 36.
The controller 154 is communicable with the first wireless
communication unit 36. The first power source 38 can supply power
to the controller 154. At least one of the switches 100 of the
operating unit 44 shown in FIG. 5 preferably controls the front
suspension device 148. As shown in FIG. 17, the controller 154
changes the state of the front suspension device 148, by operating
the first movable member 152. The front suspension device 148
operates the first actuator 158 based on a signal from the first
wireless communication unit 36. When the first actuator 158 is
driven, the first movable member 152 is operated and the state of
the front suspension device 148 is changed.
Information that is stored in the first storage unit 156 includes
the identification information, as well as the updatable individual
information. The identification information includes the model
number and the like of the front suspension device 148. The
individual information includes setting information as well as the
history information. The setting information is, for example, the
information regarding the state of the front suspension device 148.
An example of the state of the front suspension device 148 is the
displacement amount of the suspension with respect to the applied
load. In a hydraulic front suspension device 148, the state is
correlated with the hydraulic pressure. The history information
includes, for example, the information indicating whether or not a
communication with the first wireless communication unit 36 has
been appropriately carried out.
The controller 154 operates the first actuator 158 based on a
signal from the first wireless communication unit 36. For example,
when an individual information update request signal for changing
the state of the front suspension device 148 is received from the
operating unit 44 or an external device E (refer to FIG. 15), the
state of the front suspension device 148 is changed by operating
the first actuator 158 based on the received individual information
update request signal. According to the electrical system 30 of the
ninth embodiment, at least the effects in accordance with (1) and
(2) of the first embodiment can be achieved.
Modified Examples
The description relating to the above-described embodiment is an
example of forms that the bicycle electrical system according to
the present invention can take, and is not intended to limit the
forms thereof. The bicycle electrical system according to the
present invention can take the forms of the modified examples of
the embodiment shown below, as well as forms that combine at least
two modified examples that are not mutually contradictory. The
first power source 38 of the second embodiment can be attached to
the front derailleur 32. For example, as shown in FIG. 18, the
first power source 38 can be built into the first base member 50
(refer to FIG. 2) or the first movable member 54 (refer to FIG. 2)
of the front derailleur 32. In this case, the fifth housing 122 can
be omitted. Further, the first power source 38 can be attached to
the outer surface of the front derailleur 32 by a bolt or the like.
The second power source 42 of the second embodiment can be attached
to the rear derailleur 34. For example, as shown in FIG. 18, the
second power source 42 can be built into the second base member 60
(refer to FIG. 3) or the second movable member 64 (refer to FIG. 3)
of the rear derailleur 34. In this case, the sixth housing 124 can
be omitted. Further, the second power source 42 can be attached to
the outer surface of the rear derailleur 34 by a bolt or the like.
The first power source 38 of the third embodiment can be attached
to the front derailleur 32. For example, as shown in FIG. 19, the
first power source 38 can be built into the first base member 50
(refer to FIG. 2) or the first movable member 54 (refer to FIG. 2)
of the front derailleur 32. In this case, the fifth housing 122 can
be omitted. Further, the first power source 38 can be attached to
the outer surface of the front derailleur 32 by a bolt or the like.
The first power source 38 of the third embodiment can be attached
to the rear derailleur 34. For example, as shown in FIG. 20, the
first power source 38 can be built into the second base member 60
(refer to FIG. 3) or the second movable member 64 (refer to FIG. 3)
of the rear derailleur 34. In this case, the fifth housing 122 can
be omitted. Further, the first power source 38 can be attached to
the outer surface of the rear derailleur 34 by a bolt or the like.
In the fifth embodiment, the second housing 96 can be fixed to the
rear derailleur 34. That is, the second wireless communication unit
40 can be non-detachably attached to the rear derailleur 34.
Further, the second wireless communication unit 40 can be
non-detachably attached to the second base member 60. Further, the
second power source 42 can be non-detachably attached to the second
base member 60. In the case that the rear derailleur 34 is
configured as the first electric component and the front derailleur
32 is configured as the second electric component, the first
housing can be made detachable to the rear derailleur 34 and the
second housing can be fixed to the front derailleur 32. In the
seventh embodiment, the shift sequence as the individual
information can be stored to the first storage unit 136 and the
second storage unit 138. When receiving a signal to change the gear
ratio .gamma. from the operating unit 44, at least one of the first
actuator 58 and the second actuator 68 is operated on the basis of
the shift sequence by the controller 56 and the controller 66. The
shift sequence preferably includes a first sequence in which the
gear ratio of the bicycle 10 which is determined by both the front
derailleur 32 and the rear derailleur 34 becomes larger, and a
second sequence in which the gear ratio of the bicycle 10 which is
determined by both the front derailleur 32 and the rear derailleur
34 becomes gradually smaller. When receiving a signal for
increasing the gear ratio of the bicycle 10 from the operating unit
44, the controller 56 and the controller 66 determine whether or
not to operate the first actuator 58 and the second actuator 68
according to the first sequence. When receiving a signal for
decreasing the gear ratio of the bicycle 10 from the operating unit
44, the controller 56 and the controller 66 determine whether or
not to operate the first actuator 58 and the second actuator 68
according to the second sequence. In this modified example, the
front derailleur 32 and the rear derailleur 34 operate the
actuators 58 and 68 based on a communication with the wireless
communication units 36 and 40. In the modified example described
above, the shift sequence which is stored in the first storage unit
136 can be updated using an external device E via the first
wireless communication unit 36. Further, the shift sequence which
is stored in the second storage unit 138 can be updated using an
external device E via the second wireless communication unit 40. In
this modified example, the front derailleur 32 and the rear
derailleur 34 update the information stored in the storage units
136 and 138, based on a communication with the wireless
communication units 36 and 40. In the seventh embodiment, a setting
information of a permission to continuously shift as the individual
information can be stored to the first storage unit 136 and the
second storage unit 138. A setting information of a permission to
continuously shift is a setting for permitting or not permitting a
shifting of a plurality of stages, based on the time that the
switch 100 is pressed. The electrical system 30 is capable of
updating the setting information of a permission to continuously
shift, which is stored in the storage units 136 and 138 from the
external device E via the wireless communication units 36 and 40,
to be permitted or not permitted. In the seventh embodiment, a
shifting prohibited period as the individual information can be
stored to the first storage unit 136 and the second storage unit
138. The shifting prohibited period is a period during which a
shifting operation is prohibited after a shifting operation is
executed. The electrical system 30 is capable of updating the
shifting prohibited period which is stored in the storage units 136
and 138 from the external device E via the wireless communication
units 36 and 40. In the seventh embodiment, a shift position
restriction information as the individual information can be stored
to the first storage unit 136 and the second storage unit 138. The
shift position restriction information comprises at least one of
the upper limit and the lower limit of the shift position. The
electrical system 30 automatically controls the front derailleur 32
and the rear derailleur 34 based on the shift position restriction
information. The period during which the front derailleur 32 and
the rear derailleur 34 are controlled by the electrical system 30
can be limited to when the running of the bicycle 10 has been
started. The electrical system 30 is capable of updating the shift
position restriction information which is stored in the storage
units 136 and 138 from the external device E via the wireless
communication units 36 and 40. In the seventh embodiment, a cycle
computer comprising a controller and a storage unit can be
electrically connected to the first wireless communication unit 36
or the second wireless communication unit 40. For example, the
setting information to turn a beep sound ON or OFF is stored as the
individual information to the storage unit of the cycle computer.
Further, for example, the setting information of the display time
on the display unit of the cycle computer is stored as the
individual information to the storage unit of the cycle computer.
The display time is the time during which the various information
is displayed on the display unit when the operating unit of the
cycle computer is not operated. The controller of the cycle
computer updates information stored in the storage unit of the
cycle computer, based on the received individual information update
request from the external device E via the first wireless
communication unit 36 or the second wireless communication unit 40.
In the seventh embodiment, Steps S16-S19 can be omitted. In this
case, the external device E reads individual information
corresponding to the identification information received from the
Internet or the like, or the storage unit of the external device E
in Step S20, and displays the read individual information on the
display unit. In the seventh embodiment, Steps S11-S14 and Steps
S16-S19 can be executed at the same time. For example, when
receiving an individual information request signal from the
external device E, the first wireless communication unit 36 and the
controller 56 transmit individual information along with the
identification information to the external device E. The external
device E displays the received individual information on the
display unit based on an operation of the operating unit. In the
seventh embodiment, the drive unit can be configured as the first
electric component. The drive unit comprises a first actuator for
assisting a human power drive force that is inputted to the bicycle
10, a first controller, and a first storage unit. The first
actuator is, for example, an electric motor. That is, the drive
unit comprises a motor for assisting the human power drive force
that is inputted to a crank. The drive unit operates the first
actuator based on a signal from the first wireless communication
unit 36. For example, when a signal to turn the first actuator ON
or to increase or decrease the drive force of the first actuator is
inputted from the operating unit 44, the controller 56 stops the
drive or changes the torque of the first actuator, based on the
signal. In the above-described modified example, the setting
information of the start mode as the individual information can be
stored to the first storage unit 136. A setting information of the
start mode is a setting for whether or not to drive the first
actuator when the bicycle 10 starts running. Alternatively, a
setting information is a setting for whether or not to permit
controlling the shift position to a prescribed position when the
bicycle 10 starts running. The electrical system 30 is capable of
updating the setting information of a permission to continuously
shift, which is stored in the storage unit 136 from the external
device E via the wireless communication unit 36, to be permitted or
not permitted. The electrical system 30 comprising the drive unit
described above can perform a setting for whether or not a light is
connected to the bicycle 10, using the external device E and the
first wireless communication unit 36. In the eighth embodiment, the
electric seatpost 134 can be configured as the second electric
component. In the ninth embodiment, a rear suspension device 150
can be employed instead of the front suspension device 148.
Further, a rear suspension device 150 can be employed as a second
electric component. Further, a rear suspension device 150 can be
configured as a first electric component and a front suspension
device 148 can be configured as a second electric component.
Furthermore, a suspension device comprising a front suspension
device 148 and a rear suspension device 150 can be configured as a
first electric component. In each of the embodiments, the operating
unit 44 can be provided with a storage unit. The setting
information for defining the relationships between each switch 100
and the types of derailleurs 32 and 34 as well as the shift
operation is stored in the storage unit of the operating unit 44 as
the individual information. The controller 56 of the operating unit
44 updates the information stored in the storage unit of the
operating unit 44, based on the received individual information
update request from the external device E via the third wireless
communication unit 46. In the seventh to the ninth embodiments, the
first electric component and the second electric component can
transmit the number of errors to the external device E as the
history information, based on a signal from the wireless
communication units 36 and 40. Further, instead of the number of
errors, the number of operations of the electric component can be
read as the history information. In the ninth embodiment, the
setting information for defining the relationships between each
switch 100 and the type of the front suspension device 148 as well
as the individual information can be stored in the storage unit of
the operating unit 44 as the individual information. An example of
the setting information is a setting information of the mode. The
mode sets the control mode of the front suspension device 148. The
control modes include, for example, a fork mode, a shock mode, an
uphill mode, a trail mode, and a downhill mode. In each embodiment,
the operating unit 44 can be changed to the operating unit 128
shown in FIG. 21. The operating unit 128 incorporates a third
wireless communication unit 46 and a third power source 48. The
third wireless communication unit 46 and the third power source 48
are attached to the handlebar 16 via the operating unit 44. In this
case, the fifth housing portion 106 and the sixth housing portion
112 can be omitted. In each embodiment, the controller 98 of the
operating unit 44 can be omitted. In this case, each of the
switches 100 and the controller 102 of the third wireless
communication unit 46 are connected by a communication line. Then,
when a switch 100 is operated, the controller 102 of the third
wireless communication unit 46 transmits a shift signal wirelessly
to at least one of the first wireless communication unit 36 and the
second wireless communication unit 40, based on the operated switch
100. The third power source 48 can be permitted as well. In this
case, a configuration can be employed in which power is supplied to
the controller 98 along with an operation of the switch 100 by
including a piezoelectric element in the switch 100. The controller
98 transmits an operation signal to the controller 102, based on
the supply of power due to the switch 100 being operated. In each
embodiment, a plurality of the operating units 44 can be employed
as well. In this case, one operating unit 44 can be associated with
the front derailleur 32 and the other operating units 44 can be
associated with the rear derailleur 34. In this case, one third
wireless communication unit 46 and one third power source 48 which
are connected to the plurality of operating units 44 can be
provided, or a third wireless communication unit 46 and a third
power source 48 can be provided for each operating unit 44. The
first housing 82 of the first embodiment can be attached to the
chain stay 14C, the seatpost 18, the front fork 20, or the hub
assembly 22. In addition, at least one of the fourth housing 118
and the fifth housing 122 of the second embodiment to the fourth
embodiment as well as the sixth embodiments can be attached to the
chain stay 14C, the seatpost 18, the front fork 20, or the hub
assembly 22. The second housing 96 of the first embodiment can be
attached to the seat tube 14D, the seatpost 18, the front fork 20,
or the hub assembly 22. In addition, at least one of the sixth
housing 124 and the seventh housing 126 of the second to the fourth
as well as the sixth embodiments can be attached to the chain stay
14C, the seatpost 18, the front fork 20, or the hub assembly 22.
The electrical system 30 of the first to the seventh embodiments
can be mounted to a bicycle 10B comprising the vehicle body 130
shown in FIG. 22. The vehicle body 130 comprises the frame main
body 132, the handlebar 16, the seatpost 18, the front fork 20
comprising the front suspension device 148, the hub assembly 22,
and rear suspension device 150. The frame main body 132 comprises
the down tube 14B, the seat tube 14D, and the head tube 14E. In
this case, the first housing 82 can be attached to the front
suspension device 148 or the rear suspension device 150. Further,
the second housing 96 can be attached to the front suspension
device 148 or the rear suspension device 150. In each embodiment,
the first wireless communication unit 36 can be electrically
connected to the rear derailleur 34, and the second wireless
communication unit 40 can be electrically connected to the front
derailleur 32. In this case, the rear derailleur 34 corresponds to
a first electric transmission and the front derailleur 32
corresponds to a second electric transmission. In each embodiment,
the front derailleur 32 can be changed to an electric transmission
that is built into a support portion 14A. For example, the electric
transmission can be configured by a planetary gear mechanism
comprising a plurality of sun gears and comprising a regulating
mechanism for selecting and regulating the rotation of the
plurality of sun gears. In this case, in the seventh embodiment,
the adjustment setting of the front derailleur 32 is performed by
adjusting the operation amount of the regulating mechanism. In each
embodiment, the rear derailleur 34 can be changed to an electric
transmission that is built into the hub assembly 22. For example,
the electric transmission can be configured by a planetary gear
mechanism comprising a plurality of sun gears and comprising a
regulating mechanism for selecting and regulating the rotation of
the plurality of sun gears. In this case, in the seventh
embodiment, the adjustment setting of the rear derailleur 34 is
performed by adjusting the operation amount of the regulating
mechanism. In each embodiment, the electrical system 30 can be
applied to a bicycle 10 comprising a motor for assisting a human
power drive force that is inputted to a crankshaft C.
* * * * *